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SUMMARY:Enhanced weak lensing cosmology with the lensing PDF
DTSTART;VALUE=DATE-TIME:20230531T151000Z
DTEND;VALUE=DATE-TIME:20230531T153500Z
DTSTAMP;VALUE=DATE-TIME:20260907T154051Z
UID:indico-contribution-973@cern.ch
DESCRIPTION:Speakers: Benjamin GIBLIN ()\nWeak lensing cosmology stands at
  a crossroads\, with cosmological tensions between cosmic shear experiment
 s and those from Planck’s analysis of the CMB hinting at either undiscov
 ered physics or unaccounted-for systematics. In response to this mystery\,
  we present a new weak lensing statis- tic capable of vastly enhancing cos
 mological inference. The “lensing PDF” - or the distribution of projec
 ted structures in various density bins - directly probes non-Gaussianities
  in large-scale structure\, extracting extra cosmological information beyo
 nd the reach of two-point statistics con- ventionally employed in this fie
 ld. Using numerical simulations tailored to match upcoming data from LSST\
 , I demonstrate that lensing PDFs outperform standard lensing probes by >9
 0% in con- straining the matter energy density and amplitude of the matter
  power spectrum. This approach consequently presents a promising means to 
 shed light on the observed cosmological discordance.\n\nhttps://indico.uni
 na.it/event/70/contributions/973/
LOCATION:Lisbon
URL:https://indico.unina.it/event/70/contributions/973/
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